81652835060 has 24 divisors (see below), whose sum is σ = 176105305320. Its totient is φ = 31778400384.

The previous prime is 81652835059. The next prime is 81652835107. The reversal of 81652835060 is 6053825618.

It can be written as a sum of positive squares in 4 ways, for example, as 17726792164 + 63926042896 = 133142^2 + 252836^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55170095 + ... + 55171574.

It is an arithmetic number, because the mean of its divisors is an integer number (7337721055).

Almost surely, 2^81652835060 is an apocalyptic number.

It is an amenable number.

81652835060 is an abundant number, since it is smaller than the sum of its proper divisors (94452470260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81652835060 is a wasteful number, since it uses less digits than its factorization.

81652835060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110341715 (or 110341713 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 81652835060 in words is "eighty-one billion, six hundred fifty-two million, eight hundred thirty-five thousand, sixty".